iMac Pro, the most powerful Mac ever, available today (press release)
- More info at iMac Pro home and specs page. ($4999 base, with options at max $13K+).
(Also note iMac Pro RAM is not user upgradeable.)
Although still no release date yet, the press release also mentions the next-gen (modular) Mac Pro & new Pro display. (Hopefully it will have user upgradeable memory, storage and standard format (PCIe) Graphics card.)

"... Apple is working on a completely redesigned, next-generation Mac Pro architected for pro customers who need the highest performance, high-throughput system in a modular, upgradeable design, as well as a new high-end pro display."

GRID™ Autosport for iOS v1.2.1 (iOS 11 or later)
- Contains performance enhancements and customised settings for iPhone X
- Fixes a bug which can cause a crash when device language is set to Portuguese
- Fixes a rare issue where audio would cut out during a race
- Fixes a number of minor localisation issues

For feedback on these updates, check the Apple Airport and Time Capsule forums.
(As usual, there are several threads there on problems after the update - from reduced range, message on possible overheating (one user said setting up as new device helped) and several saying their bases now appear bricked. Some threads are now several pages back.)